Date Posted: 02/04/19

Air-operated double diaphragm (AODD) pumps are positive displacement pumps which utilize compressed air for fluid transfer. AODD pumps are used in a plethora of industrial applications to transfer high-viscosity oils and lubricants.

All-Flo air-operated double diaphragm pump construction

All-Flo AODD fluid transfer pumps implement a simple design comprising two diaphragms, a connecting rod assembly, check valves, an air valve, and a pilot valve. The simplicity of construction makes these pumps easier to service, faster to repair, and cheaper to operate than other pumps on the market.

How does an AODD pump work?

All-Flo AODD fluid transfer pumps utilize compressed air for fluid transfer. A connecting rod links the two diaphragms together, and rapid alternate displacement action between them results in continuous fluid flow.

When one chamber moves inward, it creates suction, which causes the ball to move towards each other. When this happens, the top valve closes, and the bottom valve opens, allowing fluid to flow through the chamber at the bottom. Thus, when one chamber is in suction mode, the other is in a discharge mode. To learn more about how All-Flo’s AODD pumps work and see the world’s simplest air valve in action, click here.

All-Flo AODD Pumps Transfer Oils and Lubricants

All-Flo offers a range of AODD fluid transfer pumps ideal for transferring various oils and lubricants, including, corn oil, cotton seed oil, lemon oil, linseed oil, soybean oil, mineral oils, hydraulic oils, and many more. All our pumps are performance engineered and quality-assured to meet stringent international standards.

Key features include:

• Rugged metallic construction
• Leak-free operation
• Multiple inlet sizes
• Dry running and self-priming
• Adjustable flow rates
• Multiple elastomer options
• Externally serviceable air valve

Advantages of using AODD pumps

A key benefit of our air-operated diaphragm pumps is that they are suitable for virtually any kind of oil or lubricant transfer – allowing most industrial users to utilize a single pump. The pumps also come in various fluid connection sizes and flow rates for efficient operation in the most demanding applications.

Where to find the best lubricant and oil transfer pumps

All-Flo offers a robust selection of AODD pumps with various fluid connection sizes suitable for lubricant and oil transfer applications. Please review the chemical compatibility chart with your fluids to select the appropriate elastomer and pump housing.

Metal AODD oil transfer pumps

All-Flo’s metallic AODD lubricant and oil transfer pumps feature a double diaphragm construction and are ideal for general purpose oil and lubricant transfer applications. They come in three materials: aluminum, anodized aluminum, and stainless steel. AODD Pumps in aluminium and anodized aluminium offer medium corrosion and abrasion resistance, while stainless steel is suitable for applications that require higher chemical and abrasion resistance.

Our metal fluid transfer pumps include:

The ?-inch Metal Pump A050– An air-operated metal fluid transfer pump with a bolted construction. This pump comes in aluminum, anodized aluminum, or stainless steel in the fluid end and aluminum or polypropylene (glass-filled) in the air end. Available elastomers for this model are Geolast?, Santoprene?, PTFE, Viton?/FKM, Buna-N, and EPDM. The pump has a maximum lift of 15ft-H2O (dry) & 31ft-H2O (wet) with a maximum flow rate of 15gpm (57lpm).

The 1-inch Metal Pump A100– An air-operated metal fluid transfer pump with a larger, bolted construction. The A100 model is fabricated with aluminum, anodized aluminum, or stainless steel in the fluid end and aluminum or PTFE-coated aluminum in the air end. Available elastomers for this pump include Geolast?, Santoprene?, PTFE, Viton?/FKM, Buna-N, and EPDM. The pump has a maximum lift of 17ft-H2O (dry) & 30ft-H2O (wet) with a maximum flow rate of 48gpm (182lpm).

The 1.5-inch Metal Pump A150– An air-operated metal fluid transfer pump with a bolted construction. This pump comes in aluminum, anodized aluminum, or stainless steel in the fluid end and aluminum or stainless steel in the air end. Available elastomers for this model are Geolast?, Santoprene?, PTFE, Viton?/FKM, Buna-N, and EPDM. The pump has a maximum lift of 22ft-H2O (dry) & 31ft-H2O (wet) with a maximum flow rate of 115gpm (435lpm).

The 2-inch Metal Pump A200– An air-operated metal fluid transfer pump with a bolted construction. This pump comes in aluminum, anodized aluminum, or stainless steel in the fluid end and aluminum or stainless steel in the air end. Available elastomers for this model are Geolast?, Santoprene?, PTFE, Viton?/FKM, Buna-N, and EPDM. The pump has a maximum lift of 24ft-H2O (dry) & 32ft-H2O (wet) with a maximum flow rate of 190gpm (719lpm).

The 3-inch Metal Pump A300– Designed for optimum fluid transfer in the most demanding lubricant and oil transfer applications, the 3-inch metal A300 pump utilizes a bolted construction and manufactured with aluminum, anodized aluminum, or stainless steel in the fluid end and aluminum or PTFE-coated aluminum in the air end. Available elastomers for this pump include Geolast?, Santoprene?, PTFE, Viton?/FKM, Buna-N, and EPDM and the pumps have a maximum lift of 20ft-H2O (dry) & 31ft-H2O (wet) and a maximum flow rate of 235gpm (890lpm).

At All-Flo, We Pump Solutions.?

All-Flo is a global market leader specializing in the manufacture of lube-free, air-operated double diaphragm (AODD) pumps. Since 1986, we have provided superior performance fluid transfer solutions to metal finishing, coating, petrochemical, mining, oil & gas and several other industries around the world.

All-Flo boasts a broad range of fluid transfer pumps of varying sizes and materials, which are all quality-assured for reliable operation in the most demanding conditions. All-Flo products are manufactured in the USA.

For more information about our products or to request a quote please visit our website, call: +1-440-354-1700 or fax: +1-440-354-9466.